alt.energy.renewable

"Bob Eld" schrieb im Newsbeitrag
news:76OJj.229$iK6.83@nlpi069.nbdc.sbc.com...
>
> "Roland Mösl" wrote in message
> news:d06c7$47f71eb8$557f97eb$10085@news.inode.at...
>> "Blattus Slafaly 0/00 ? ? ?" schrieb im
>> Newsbeitrag news:47f69efd$0$22810$4c368faf@roadrunner.com...
>> > Sunflowers work better and have more oil. Leave the corn alone.
>>
>> Photovoltaic works 500 times better
>
>> Roland Mösl
>
> Yes, Photovoltaic is much more efficient at collecting solar energy that
> agriculture. But, Photovoltaic requires much more capital equipment costs,
> labor costs, preparation, maintenance and so on. So it is not nearly as
> efficient as agriculture in dollars spent, at least not yet. Money is what
> it is about, not energy efficiency.

> Furthermore, there is no convenient and inexpensive way to store and
> transport collected PV energy

There are 2 border lines for photovoltaic energy

The first border is reached, when there is so much photovoltaic
that existing storage systems can not hold

From this point up, I suggest 5 kWh Lithium iron phosphat
batteries for 1 kW photovoltaic for day/night storage

This is at about 80 GW in Germany

The second border is reached, when even with the batteries,
there is more energy on a sunny summer day.

Here begins the hydrogen methanol economy, no other
chance to use the energy on a sunny summer day

http://live.pege.org/2008-energy/lithium.htm

But plug-in hybrids and electric cars are far more fuel efficient than
ICE only cars.

http://car.pege.org/2008/energy-efficiency-cars.htm

More than 50% of fuel can be saved if
burned in a CCPP with 58% efficiency and
used in a plug-in hybrid instead of the
inefficient ICE only car.

Now let's think in a combination
50% fuel
50% wind and sun

And the fuel consumption is below 25% of today

--
Roland Mösl
http://car.pege.org cars and traffic
http://live.pege.org building and live
http://www.pege.org




>. Agricultural products are easy to store and
> transport. Convenient liquid fuels are what it is about.

Plug